Want to learn and master CoffeeScript?

Join Exercism’s CoffeeScript Track for access to 25 exercises with automatic analysis of your code and personal mentoring, all 100% free.

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About CoffeeScript

class HelloWorld
  hello: (name = 'World') ->
    "Hello, #{name}!"
module.exports = HelloWorld

25 coding exercises for CoffeeScript on Exercism. From Bottle Song to Anagram.

Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.

See all CoffeeScript exercises on Exercism

Key Features of CoffeeScript


Compile to JavaScript

Allowing you to use CoffeeScript anywhere JavaScript is used.

Simple syntax

CoffeeScript has a simple syntax, inspired by Ruby and Python, that is easy to read and write.

Safety features

CoffeeScript allows you to check for existence and doesnt have a `var` keyword.

Large package ecosystem

CoffeeScript can use any JavaScript library or package.

Destructuring assignment

Handle multiple return values from a function or multiple properties from an object.


Use which ever paradigm you want: functional, object-oriented or imperative programming.

Get mentored the CoffeeScript way

Every language has its own way of doing things. CoffeeScript is no different. Our mentors will help you learn to think like a CoffeeScript developer and how to write idiomatic code in CoffeeScript. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in CoffeeScript - they'll help you discover the things you don't know that you don't know.

Learn more about mentoring

Community-sourced CoffeeScript exercises

The CoffeeScript track on Exercism has 25 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.

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Get started with the CoffeeScript track

The best part, it’s 100% free for everyone.